EP0822429A1 - Microlentille à fibre optique et source de rayonnement optique l'utilisant - Google Patents

Microlentille à fibre optique et source de rayonnement optique l'utilisant Download PDF

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Publication number
EP0822429A1
EP0822429A1 EP96305605A EP96305605A EP0822429A1 EP 0822429 A1 EP0822429 A1 EP 0822429A1 EP 96305605 A EP96305605 A EP 96305605A EP 96305605 A EP96305605 A EP 96305605A EP 0822429 A1 EP0822429 A1 EP 0822429A1
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EP
European Patent Office
Prior art keywords
optical fibre
microlens
optical
laser diode
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96305605A
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German (de)
English (en)
Other versions
EP0822429B1 (fr
Inventor
Andrew Thomas Harker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avago Technologies International Sales Pte Ltd
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Priority to EP96305605A priority Critical patent/EP0822429B1/fr
Priority to DE69638208T priority patent/DE69638208D1/de
Priority to US08/892,961 priority patent/US5940557A/en
Priority to JP19168897A priority patent/JP4024349B2/ja
Publication of EP0822429A1 publication Critical patent/EP0822429A1/fr
Application granted granted Critical
Publication of EP0822429B1 publication Critical patent/EP0822429B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
    • G02B6/3636—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the mechanical coupling means being grooves
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G02B6/4203—Optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
    • G02B6/3822—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with beveled fibre ends

Definitions

  • the present invention relates to the coupling of optical radiation into an optical fibre, and in particular to an optical fibre microlens and to a source of optical radiation employing the same.
  • Two key aspects in the coupling of optical radiation from a semiconductor laser diode to an optical fibre are the efficiency of the coupling, and the level of back reflection of radiation from the optical fibre to the laser diode.
  • Various techniques are known for reducing the level of back reflection, or for increasing the coupling efficiency.
  • a known technique for reducing the level of back reflection is to arrange for the optical radiation to strike the fibre end face at an angle other than 90°, either by tilting the optical fibre with respect to the laser diode, or by polishing the end face of the optical fibre obliquely.
  • Other known techniques include providing an anti-reflection coating on the fibre end face, or roughening the fibre end face so as to minimise Fresnel reflection as taught in US 5,479,549. These techniques do not provide any focusing of the optical radiation, and thus, while they may reduce the level of back reflection to some extent, the coupling efficiency between the laser diode and the optical fibre is low.
  • a simple wedge-shaped optical fibre microlens is proposed by Shah et al in "Efficient power coupling from a 980nm, broad area laser to a single mode fibre using a wedge-shaped fibre end face" Journal of Lightwave Technology, Volume 8, No. 9, September 1990, and a double-wedge microlens design is disclosed in US 5,455,879.
  • Giles et al propose to improve the immunity to spurious reflections of these lasers by utilising bulk gratings or fibre grating reflectors to provide a controlled narrow band reflection. This suggestion is taken up by Ventrudo et al ("Wavelength and Intensity Stabilisation of 980nm diode lasers coupled to fibre Bragg gratings" Electronic Letters, 8th December 1994, volume 13, No. 25 and US 5,485,481), who improve the spectral characteristics of commercially available 980nm pump diode lasers by using optical feedback from fibre Bragg gratings.
  • an optical fibre microlens comprising anamorphic focusing means, wherein the major axis of the focusing means is not perpendicular to the longitudinal axis of the optical fibre.
  • the present invention thus provides a simple, effective technique for simultaneously increasing the coupling efficiency between an optical fibre and a laser diode having an asymmetric output, and reducing the level of back reflection from the microlens to the laser diode.
  • the present Applicants have calculated that a simple wedge-shaped optical fibre microlens, whose tip is at 90° to the optical fibre axis (as described by Shah et al) causes a back reflection of approximately -30dB. This level of back reflection is sufficient to disturb the output spectrum of a 980nm laser diode. If the tip of the wedge is rounded at all, the level of back reflected radiation will be higher.
  • the present invention seeks to ensure that any radiation reflected from an anamorphic microlens is directed away from the active area of a laser diode, while also maintaining high-coupling efficiency between the laser diode and the optical fibre.
  • the back reflection from the microlens is likely to be the only significant source of back reflection, thus the performance of EDFA's utilising microlens according to the present invention may be enhanced.
  • the present invention also facilitates the accurate and stable alignment of a microlens to a semiconductor laser diode by substantially eliminating Fabry-Perot cavity effects.
  • the anamorphic focusing means may be circularly cylindrical, essentially comprising a cylindrical lens formed on the end of the optical fibre so that the axis of the cylinder is not perpendicular to the longitudinal axis of the optical fibre.
  • the anamorphic focusing means comprises at least two substantially planar surfaces inclined with respect to each other to form a wedge.
  • the line of intersection of the two planar surfaces at the tip of the wedge comprises the major axis of the focusing means, and is aligned at an angle of less than 90° to the longitudinal axis of the optical fibre.
  • the angle between the line of intersection of the two planar surfaces and the axis of the optical fibre is less than 89° and greater than 75°, most preferably the angle is substantially 83°.
  • the profile of the tip of the wedge in a plane perpendicular to the line of intersection of the two planar surfaces, may be a triangle.
  • the profile at the tip of the wedge may be curved. Such a curved profile increases the coupling efficiency of radiation to the optical fibre.
  • the asymptotes of the curve lie within the two planar surfaces.
  • the curve is substantially hyperbolic.
  • the included angle of the wedge is between 95° and 125°, to ensure optimum coupling.
  • the tip of the wedge may be truncated in the vicinity of the longitudinal axis of the optical fibre, preferably by a third substantially planar surface inclined at a substantially equal angle to each of the planar surfaces forming the wedge.
  • Such truncation of the wedge allows the active area of the microlens, close to the core of the optical fibre, to more closely approach the facet of the laser diode, thus enhancing coupling efficiency.
  • a source of optical radiation comprising a semiconductor laser diode, having an output facet, and an optical fibre microlens according to the first aspect of the present invention aligned to receive optical radiation output from an active area of the laser diode through the output facet, wherein the level of optical radiation, output from the laser diode, which is reflected back from the microlens to the active area of the laser diode is substantially reduced.
  • the longitudinal axis of the optical fibre is not perpendicular to the output facet of the semiconductor laser diode, so as to ensure that radiation from the laser diode does not strike the optical fibre microlens in a direction parallel to its longitudinal axis. This increases the coupling efficiency of radiation from the laser diode to the optical fibre.
  • the longitudinal axis of the optical fibre makes an angle of between 89° and 83° with the output facet of the semiconductor laser diode, and most preferably makes an angle of substantially 87°.
  • the tip of the wedge of a microlens is aligned away from the perpendicular to the longitudinal axis of the optical fibre, and the longitudinal axis of the optical fibre itself is aligned away from the perpendicular to the facet of the laser diode.
  • Figure 1 shows a schematic drawing of an optical fibre microlens 4 according to an embodiment of the present invention.
  • An optical fibre 1 has a core 2 centred on its longitudinal axis 3. At one end of the optical fibre 1, the fibre is substantially wedge shaped. The wedge shape is formed by two substantially planar surfaces 5 and 6, which meet at a line of intersection 7. The line of intersection 7 makes an angle of ⁇ with the longitudinal axis 3 of the optical fibre 1.
  • FIG 2 is a schematic diagram of a semiconductor laser diode 8, having an active area 9, aligned to an optical fibre microlens 4 according to an embodiment of the present invention.
  • the ouput radiation pattern of the semiconductor laser diode 8 is elliptical, its near field mode having a major radius of W, and a minor radius of w.
  • the microlens 4 is aligned to the semiconductor laser diode 8 so that its line of intersection 7 lies within the same plane as the major axis of the near field mode of the laser diode 8 (i.e. the plane of the paper in Figure 2).
  • the angle ⁇ of the optical fibre microlens 4 is chosen so that at the optimum coupling distance D of the optical fibre and microlens 4 from the semiconductor laser diode 8, any radiation back reflected from the microlens 4 reaches the facet 10 sufficiently far from the active area 9 so as not to disturb the operation of the semiconductor laser diode 8.
  • ⁇ 90 - ⁇ + ⁇
  • ⁇ and ⁇ When employing silica optical fibre microlens, for which n is approximately 1.5, optimum values for ⁇ and ⁇ have been found to be approximately 83° and approximately 3° respectively.
  • coupling efficiencies equal to those achievable utilising prior art wedge shaped microlenses can be achieved, while simultaneously eliminating the affect of back reflections from the microlens to the laser diode.
  • coupling efficiencies can be further improved by employing a double wedge profile 11, a hyperbolic profile 12; or a circular profile (not shown) for the tip of the wedge.
  • the angle ⁇ between the planar surfaces 5 and 6, known as the wedge included angle, may also be optimised by means known to those skilled in the art.
  • FIG. 5 A further embodiment of the present invention is illustrated schematically in Figure 5.
  • the applicants have found that in some circumstances the optimum distance D between the optical fibre microlens 4 and the facet 10 of the laser diode 8 is sufficiently small that there is a risk of collision between the two during alignment (for example the distance D may be as little as 8 ⁇ m). It is thus advantageous to truncate the tip of the wedge 13 close to the core 2 of the optical fibre 1. This can be achieved by providing a third planar surface 14, at an equal angle to the planar surfaces 5 and 6.
  • a magnetic holder 15 is utilised to hold the optical fibre 1, as shown in Figure 6a.
  • the magnetic holder 15 comprises two parts, 15a and 15b, between which the optical fibre 1 is held.
  • Each part of the magnetic holder 15 has a groove 16 sized so as to firmly grip the optical fibre 1.
  • Figure 6b shows a plan view of the inner face of one magnetic holder part 15a.
  • the groove 16 in the inner surface of the magnetic holder 15a is at an angle of (90- ⁇ ) to a longitudinal rotational axis 17 which lies within the inner face of the magnetic holder 15a.
  • the other half 15b of the magnetic holder has a matching groove 16 at the same angle to its rotational axis 17.
  • the optical fibre 1 is placed within a groove 16 in a first part 15a of the magnetic holder.
  • the second part 15b of the holder is placed on top of the first part 15a, so that the optical fibre 1 is firmly held within the groove 16 in the two parts of the holder 15a and 15b.
  • the magnetic holder 15 is positioned so as to hold the optical fibre 1 against a planar rotating grinding disc 18, so that the angle between the fibre axis 3 and the plane of the grinding disc 18 is one half of the desired wedge included angle ⁇ .
  • the magnetic holder 15 is rotated through 180° about its longitudinal axis of rotation 17 (from position A to position B in Figure 7b) and is again positioned so that the fibre axis 3 makes the same angle ⁇ /2 to the grinding disc 18 so as to form the second planar surface 6 of the wedge.
  • the desired angle ⁇ , between the line of intersection 7 of the planar surfaces 5 and 6 of the wedge and the longitudinal axis 3 of the optical fibre 1, is ensured due to the angle between the groove 16 and the rotational axis 17 of the magnetic holder 15.
  • the grinding process is repeated, alternating between grinding surface 6 and surface 5, and an optical check on the position of the line of intersection 7 is carried out between each grinding step.
  • the optical check comprises launching radiation from a 980nm laser into the remote end of the optical fibre 1, and monitoring the farfield pattern emitted from the microlens with a CCD camera and monitor.
  • Figure 8a shows an asymmetrical farfield pattern which indicates that the line of intersection 7 is not centrally positioned across the core 2 of the optical fibre 1.
  • Figure 8b is a symmetrical farfield pattern indicating that the line of intersection 7 is now centrally located across the core 2.
  • Figure 7 shows the power against wavelength curve A obtained from an optical spectrum analyser over a period of 1 minute for the prior art wedge lens, and the curve B obtained for a microlens according to the present invention.
  • the optical spectrum analyser was set so as to sweep 200 times across the wavelength band of the laser diode within a 1 minute period, and to retain the maximum power measured at each wavelength.
  • the gain or output power of an EDFA will vary as the laser diode pump wavelength varies. This variation in gain in the EDFA will cause undesirable modulation in the signal being amplified by the EDFA.
  • a further advantage given by optical fibre microlenses according to embodiments of the present invention is the elimination of Fabry-Perot cavity effects when aligning the microlens to a laser diode.
  • Figure 8a and b show the variation in optical power coupled to an optical fibre as a function of the distance between the microlens and the laser diode for a prior art wedge lens and for a microlens according to the present invention respectively. Back reflections from the tip of the prior art wedge lens into the laser diode cause a variation in the coupled power due to the weak Fabry-Perot cavity formed between the lens tip and the front facet of the laser diode.
  • This weak Fabry-Perot cavity superimposes a ripple, in this case of about 5% amplitude on the curve of coupled power against lens facet distance.
  • This ripple causes difficulty in initially aligning the optical fibre microlens to achieve optimum coupling, since there are many local, false maxima.
  • small variations in the distance between the optical fibre microlens and the laser diode, for example due to temperature changes, will lead to far greater fluctuations in the power coupled to the optical fibre due to these ripples.
  • Figure 8b when a microlens according to the present invention is employed the variation in coupled power with microlens to laser diode distance is smooth, and shows no sign of Fabry-Perot cavity ripples. This enables the optimum coupling distance to be achieved reliably and accurately, and ensures that in service variations in coupled power are minimised.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Semiconductor Lasers (AREA)
  • Lenses (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
EP96305605A 1996-07-30 1996-07-30 Microlentille à fibre optique, source de rayonnement optique l'utilisant et méthode de fabrication Expired - Lifetime EP0822429B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP96305605A EP0822429B1 (fr) 1996-07-30 1996-07-30 Microlentille à fibre optique, source de rayonnement optique l'utilisant et méthode de fabrication
DE69638208T DE69638208D1 (de) 1996-07-30 1996-07-30 Glasfaser-Mikrolinse und damit aufgebaute optische Strahlungsquelle sowie Fertigungsverfahren
US08/892,961 US5940557A (en) 1996-07-30 1997-07-16 Optical fibre microlens and optical radiation source employing the same
JP19168897A JP4024349B2 (ja) 1996-07-30 1997-07-17 光ファイバ超小型レンズ及びその形成方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96305605A EP0822429B1 (fr) 1996-07-30 1996-07-30 Microlentille à fibre optique, source de rayonnement optique l'utilisant et méthode de fabrication

Publications (2)

Publication Number Publication Date
EP0822429A1 true EP0822429A1 (fr) 1998-02-04
EP0822429B1 EP0822429B1 (fr) 2010-06-30

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EP96305605A Expired - Lifetime EP0822429B1 (fr) 1996-07-30 1996-07-30 Microlentille à fibre optique, source de rayonnement optique l'utilisant et méthode de fabrication

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Country Link
US (1) US5940557A (fr)
EP (1) EP0822429B1 (fr)
JP (1) JP4024349B2 (fr)
DE (1) DE69638208D1 (fr)

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WO2002013339A2 (fr) * 2000-08-09 2002-02-14 Sdl, Inc. Suppression de longueurs d'ondes non voulues dans le trajet de pompage de milieux de gain optiques pompes
WO2003021317A2 (fr) * 2001-08-29 2003-03-13 3M Innovative Properties Company Appareils optiques faisant intervenir des fibres optiques profilees et procedes de fabrication d'appareils optiques comportant des fibres optiques profilees
WO2010138478A1 (fr) * 2009-05-26 2010-12-02 Corning Incorporated Ensemble optique athermique à couplage de proximité comprenant une source laser et un dispositif de conversion de longueur d'onde à facettes composites

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JP2000314831A (ja) * 1999-04-30 2000-11-14 Seikoh Giken Co Ltd 楔形レンズ付き光ファイバ
US6324326B1 (en) * 1999-08-20 2001-11-27 Corning Incorporated Tapered fiber laser
US7068870B2 (en) * 2000-10-26 2006-06-27 Shipley Company, L.L.C. Variable width waveguide for mode-matching and method for making
US6833962B2 (en) * 2000-12-04 2004-12-21 Richard F. Bergen Light altering device
EP1356327B1 (fr) * 2000-12-14 2008-04-16 Shipley Company LLC Convertisseur de mode optique modifiant la forme verticale et horizontale du mode
US7251406B2 (en) * 2000-12-14 2007-07-31 Shipley Company, L.L.C. Optical waveguide termination with vertical and horizontal mode shaping
US7158701B2 (en) * 2001-02-21 2007-01-02 Shipley Company, L.L.C. Method for making optical devices with a moving mask and optical devices made thereby
JP2002261385A (ja) * 2001-03-02 2002-09-13 Mitsubishi Electric Corp レーザダイオードモジュール
US6912345B2 (en) 2001-03-30 2005-06-28 Shipley Company, L.L.C. Tapered optical fiber for coupling to diffused optical waveguides
US6792012B2 (en) 2001-04-30 2004-09-14 Jds Uniphase Corporation Laser pump module with reduced tracking error
US6748137B2 (en) 2001-04-30 2004-06-08 Jds Uniphase Corporation Lensed optical fiber
US6792008B2 (en) 2001-04-30 2004-09-14 Jds Uniphase Corporation Tracking error suppression and method of reducing tracking error
JP2005509190A (ja) * 2001-11-08 2005-04-07 ローム・アンド・ハース・エレクトロニック・マテリアルズ，エル．エル．シー． 光ファイバー終端装置
US6894341B2 (en) * 2001-12-25 2005-05-17 Kabushiki Kaisha Toshiba Semiconductor device and manufacturing method
JP2003283036A (ja) 2001-12-27 2003-10-03 Furukawa Electric Co Ltd:The 半導体レーザモジュールおよびこれを用いたラマン増幅器
US6805491B2 (en) * 2002-05-20 2004-10-19 Stratos International, Inc. Stub having an optical fiber
US6822190B2 (en) * 2002-12-12 2004-11-23 3M Innovative Properties Company Optical fiber or waveguide lens
US20050111512A1 (en) * 2003-09-17 2005-05-26 Martina Krieg Apparatus for generating and transmitting laser light
US20050069256A1 (en) * 2003-09-25 2005-03-31 3M Innovative Properties Company Lensed optical fiber and method for making the same
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US20090310634A1 (en) * 2004-04-27 2009-12-17 Oclaro Stabilized laser source with very high relative feedback and narrow bandwidth
US7012754B2 (en) * 2004-06-02 2006-03-14 Micron Technology, Inc. Apparatus and method for manufacturing tilted microlenses
US7512306B2 (en) * 2007-01-03 2009-03-31 Jds Uniphase Corporation Polarization maintaining fiber pigtail assembly
US8102887B2 (en) 2009-05-26 2012-01-24 Corning Incorporated Edge bonded optical packages
US20110129189A1 (en) * 2009-11-30 2011-06-02 Venkata Adiseshaiah Bhagavatula Clad metal substrates in optical packages
EP2522057B1 (fr) * 2010-01-08 2017-03-22 II-VI Laser Enterprise GmbH Système laser à sortie hautement linéaire
US8111452B2 (en) * 2010-02-22 2012-02-07 Corning Incorporated Wavelength conversion device with microlens and optical package incorporating the same
US8905648B2 (en) 2011-06-29 2014-12-09 Cinch Connectivity Solutions, Inc. Expanded beam fiber optic connector
KR102303039B1 (ko) * 2017-11-08 2021-09-17 한국전기연구원 펄스 레이저 장치
JP6966701B2 (ja) 2018-03-20 2021-11-17 日亜化学工業株式会社 光モジュール

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
WO2002013339A2 (fr) * 2000-08-09 2002-02-14 Sdl, Inc. Suppression de longueurs d'ondes non voulues dans le trajet de pompage de milieux de gain optiques pompes
WO2002013339A3 (fr) * 2000-08-09 2002-05-16 Sdl Inc Suppression de longueurs d'ondes non voulues dans le trajet de pompage de milieux de gain optiques pompes
WO2003021317A2 (fr) * 2001-08-29 2003-03-13 3M Innovative Properties Company Appareils optiques faisant intervenir des fibres optiques profilees et procedes de fabrication d'appareils optiques comportant des fibres optiques profilees
WO2003021317A3 (fr) * 2001-08-29 2003-10-16 3M Innovative Properties Co Appareils optiques faisant intervenir des fibres optiques profilees et procedes de fabrication d'appareils optiques comportant des fibres optiques profilees
WO2010138478A1 (fr) * 2009-05-26 2010-12-02 Corning Incorporated Ensemble optique athermique à couplage de proximité comprenant une source laser et un dispositif de conversion de longueur d'onde à facettes composites
CN102449521A (zh) * 2009-05-26 2012-05-09 康宁股份有限公司 包括激光源和化合物面波长转换器件的近耦合无热光学封装

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US5940557A (en) 1999-08-17
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JPH1078531A (ja) 1998-03-24
EP0822429B1 (fr) 2010-06-30

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